Probability · Question 21 · Medium
Probability question 21
A bag contains 6 white and 4 black balls. Two balls are drawn at random without replacement. What is the probability that one is white and one is black?
- 4/15
- 2/5
- 8/15
- 12/25
Answer and explanation
Answer: C. 8/15
Explanation: Favourable = 6 × 4 = 24; total = 10C2 = 45. Probability = 24/45 = 8/15.
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